UPF Fabric

Ōiwi jerseys are constructed only from fabric that has been certified to be UPF 50+ by the Australian Radiation Protection and Nuclear Safety Agency.

UPF refers to the amount of UV rays blocked by apparel and fabrics. UPF is a transmission test: Our fabric is exposed to a UV source that simulates the sun's rays at noon. The amount of UV rays blocked by the fabric is measured by a device called a spectrophotometer. The UPF rating refers to how much UVR is blocked. For example, a UPF 50+ blocks 97.5% of the sun's UVA and UVB rays.